In order to simplify the analysis we follow the nondimensionalisation approach studied in [1]} where the author introduce the dimensionless variables \(\left(u,v,\tau \right)\)  given by
\(\begin{aligned}& \varphi :\bar{\Omega }\times \mathbb {R}\rightarrow \Omega \times \mathbb {R}~\text{where}~\varphi \left(u,v,\tau \right)=\left(\dfrac{N}{K},\dfrac{P}{hK},\dfrac{rKt}{u\left(u+\dfrac{a}{K}\right)}\right).\end{aligned}\) 
